1*bdd2596dSAchin Gupta /* 2*bdd2596dSAchin Gupta * Copyright (c) 2019-2020, ARM Limited and Contributors. All rights reserved. 3*bdd2596dSAchin Gupta * 4*bdd2596dSAchin Gupta * SPDX-License-Identifier: BSD-3-Clause 5*bdd2596dSAchin Gupta */ 6*bdd2596dSAchin Gupta 7*bdd2596dSAchin Gupta #ifndef SPMD_PRIVATE_H 8*bdd2596dSAchin Gupta #define SPMD_PRIVATE_H 9*bdd2596dSAchin Gupta 10*bdd2596dSAchin Gupta #include <context.h> 11*bdd2596dSAchin Gupta 12*bdd2596dSAchin Gupta /******************************************************************************* 13*bdd2596dSAchin Gupta * Constants that allow assembler code to preserve callee-saved registers of the 14*bdd2596dSAchin Gupta * C runtime context while performing a security state switch. 15*bdd2596dSAchin Gupta ******************************************************************************/ 16*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X19 0x0 17*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X20 0x8 18*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X21 0x10 19*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X22 0x18 20*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X23 0x20 21*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X24 0x28 22*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X25 0x30 23*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X26 0x38 24*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X27 0x40 25*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X28 0x48 26*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X29 0x50 27*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_X30 0x58 28*bdd2596dSAchin Gupta 29*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_SIZE 0x60 30*bdd2596dSAchin Gupta #define SPMD_C_RT_CTX_ENTRIES (SPMD_C_RT_CTX_SIZE >> DWORD_SHIFT) 31*bdd2596dSAchin Gupta 32*bdd2596dSAchin Gupta #ifndef __ASSEMBLER__ 33*bdd2596dSAchin Gupta #include <services/spci_svc.h> 34*bdd2596dSAchin Gupta #include <stdint.h> 35*bdd2596dSAchin Gupta 36*bdd2596dSAchin Gupta /* 37*bdd2596dSAchin Gupta * Convert a function no. in a FID to a bit position. All function nos. are 38*bdd2596dSAchin Gupta * between 0 and 0x1f 39*bdd2596dSAchin Gupta */ 40*bdd2596dSAchin Gupta #define SPCI_FNO_TO_BIT_POS(_fid) (1 << ((_fid) & U(0x1f))) 41*bdd2596dSAchin Gupta 42*bdd2596dSAchin Gupta typedef enum spmc_state { 43*bdd2596dSAchin Gupta SPMC_STATE_RESET = 0, 44*bdd2596dSAchin Gupta SPMC_STATE_IDLE 45*bdd2596dSAchin Gupta } spmc_state_t; 46*bdd2596dSAchin Gupta 47*bdd2596dSAchin Gupta /* 48*bdd2596dSAchin Gupta * Data structure used by the SPM dispatcher (SPMD) in EL3 to track context of 49*bdd2596dSAchin Gupta * the SPM core (SPMC) at the next lower EL. 50*bdd2596dSAchin Gupta */ 51*bdd2596dSAchin Gupta typedef struct spmd_spm_core_context { 52*bdd2596dSAchin Gupta uint64_t c_rt_ctx; 53*bdd2596dSAchin Gupta cpu_context_t cpu_ctx; 54*bdd2596dSAchin Gupta spmc_state_t state; 55*bdd2596dSAchin Gupta } spmd_spm_core_context_t; 56*bdd2596dSAchin Gupta 57*bdd2596dSAchin Gupta /* 58*bdd2596dSAchin Gupta * Data structure used by the SPM dispatcher (SPMD) in EL3 to track sequence of 59*bdd2596dSAchin Gupta * SPCI calls from lower ELs. 60*bdd2596dSAchin Gupta * 61*bdd2596dSAchin Gupta * next_smc_bit_map: Per-cpu bit map of SMCs from each world that are expected 62*bdd2596dSAchin Gupta * next. 63*bdd2596dSAchin Gupta */ 64*bdd2596dSAchin Gupta typedef struct spmd_spci_context { 65*bdd2596dSAchin Gupta uint32_t next_smc_bit_map[2]; 66*bdd2596dSAchin Gupta } spmd_spci_context_t; 67*bdd2596dSAchin Gupta 68*bdd2596dSAchin Gupta /* Functions used to enter/exit a Secure Partition synchronously */ 69*bdd2596dSAchin Gupta uint64_t spmd_spm_core_sync_entry(spmd_spm_core_context_t *ctx); 70*bdd2596dSAchin Gupta __dead2 void spmd_spm_core_sync_exit(uint64_t rc); 71*bdd2596dSAchin Gupta 72*bdd2596dSAchin Gupta /* Assembly helpers */ 73*bdd2596dSAchin Gupta uint64_t spmd_spm_core_enter(uint64_t *c_rt_ctx); 74*bdd2596dSAchin Gupta void __dead2 spmd_spm_core_exit(uint64_t c_rt_ctx, uint64_t ret); 75*bdd2596dSAchin Gupta 76*bdd2596dSAchin Gupta #endif /* __ASSEMBLER__ */ 77*bdd2596dSAchin Gupta 78*bdd2596dSAchin Gupta #endif /* SPMD_PRIVATE_H */ 79